Radial gradient to black from center of image in compositing
I used the following node setup in the compositor to solve the problem I was experiencing:

The general gist of what the nodes are doing is creating an ellispe with the &quot;Ellipse Mask&quot; node and shaping it as necessary with the width and height parameters.
Next, I feed the Mask output of the Ellipse Mask Node to the Invert node. When initially using the Ellipse Mask node, the colors were opposite of what I desired, so the Invert node solves that problem with no required configuration of the node.
I feed the Color of the Invert node to a Blur node, ensure the &quot;Gaussian&quot; method is selected from the drop down list, and configure the parameters until I am comfortable with the blur or feathering of the Ellipse mask used at the beginning.
I then feed the Image output of the Blur node to an Alpha Over node, combining it with the original image as well as black in order to &quot;fade to black&quot; and bing-bang-boom, why's your mother in your room?